Ключевые слова: advance engineering, aerofoil, air, black and white, blades, circle, closeup, electricity, energy, engine, engineering, extreme, fan, fan blade, gas, generator, heavy, highspeed, industrial, industry, jet, large, layer, machine, machinery, manufacturing, metal, part, plant, power, power plant, powerful, precision, pressure, radial, rotary, rotate, rotor, round, spin, steam, steel, system, technology, turbine, turbine blade, turbine disc, twist, wheel, wind,